ABC or Multi-Purpose extinguishers utilized a specially fluidized and siliconized mono ammonium phosphate dry chemical . It chemically insulates Class A fires by melting at approximately 350 degrees fahreniet and coats surface to which it is applied . It smothers and breaks the chain reaction of class B fires and will not conduct electricity back to the operator .

Dry Chemical Powder Extinguishers utilize a specially siliconized Sodium Bicarbonate. It Chemically insulates class B,C fires by forming a cloud and cutting off the oxygen supply , thus extinguishing the fire .It smothers and breaks the chain reaction of class B fires and will not conduct electricity back to the operator .

ABC or Multi-Purpose extinguishers utilized a specially fluidized and siliconized mono ammonium phosphate dry chemical . It chemically insulates Class A fires by melting at approximately 350 degrees fahreniet and coats surface to which it is applied . It smothers and breaks the chain reaction of class B fires and will not conduct electricity back to the operator .